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Line 34: − + − − The TTT also includes an 'enhanced swale' element within the LID toolbox. In version 1.0 this element does not incorporate checkdams and doesn't account for any infiltration capacity. − + − + Line 52:
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{{Clickable button|[[File:TTT.png|400 px|link=http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/]]}}
{{Clickable button|[[File:TTT.png|300 px|link=http://www.sustainabletechnologies.ca/wp/low-impact-development-treatment-train-tool/]]}}
[[File:Swale TTT.png|thumb|Swale element in TTT menu]]
[[File:Swale TTT.png|thumb|Swale element in TTT menu]]
[[File:Weir TTT.png|thumb|Weir elements may be incorporated as check dams for detailed design]]
[[File:Weir TTT.png|thumb|Weir elements may be incorporated as check dams for detailed design]]
|+A 'swale' as a conveyance element in the TTT (key parameters)
|+A 'swale' as a conveyance element in the TTT (key parameters)
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!colspan = "2" style="background: darkcyan; color: white; align = center"|General Info
!colspan = "2"|General Info
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|-
|Upstream Node||Name of node on the inlet end of the swale (higher elevation)
|Upstream Node||Name of node on the inlet end of the swale (higher elevation)
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|-
|Manning's Roughness||Lower numbers indicate less surface obstruction and result in faster flow. <br>
|Manning's Roughness||Lower numbers indicate less surface obstruction and result in faster flow. <br>
Suggested range for mown grass (dependent on density) 0.03 – 0.06 <ref name = SWMM> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233.https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt Accessed August 23, 2017.</ref>
Suggested range for [[Turf|mown grass]] (dependent on density) 0.03 – 0.06 <ref name = SWMM> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233.https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt Accessed August 23, 2017.</ref>
|-
|-
|Upstream Invert (m)||Depth of swale invert above node invert at inlet end of the swale
|Upstream Invert (m)||Depth of swale invert above node invert at inlet end of the swale
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|-
|Seepage (mm/hour)||Infiltration rate of native (or amended) soil
|Seepage (mm/hour)||Infiltration rate of native (or amended) soil
|}
|}
{| class="wikitable"
{| class="wikitable"
|+ Parameters for 'enhanced swales' in the LID toolbox of the TTT
|+ Parameters for 'enhanced swales' in the LID toolbox of the TTT
|-
|-
!colspan = "2" style="background: darkcyan; color: white; align = center"|Surface
!colspan = "2" |Surface
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|-
|width = 210px|Berm height (mm)||This is the height of the curb which constrains the overland sheet flow of water. Where the bottom of the slope discharges directly into another LID facility without impedance, the value is 0.
|width = 210px|Berm height (mm)||This is the height of the curb which constrains the overland sheet flow of water. Where the bottom of the slope discharges directly into another LID facility without impedance, the value is 0.
|-
|-
|Surface roughness (Manning’s n)||Lower numbers indicate less surface obstruction and result in faster flow. <br>
|Surface roughness (Manning’s n)||Lower numbers indicate less surface obstruction and result in faster flow. <br>
Suggested range for [[Turf: List|mown grass]] (dependent on density) 0.03 – 0.06 <ref name = SWMM> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233.https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt Accessed August 23, 2017.</ref>
Suggested range for [[Turf|mown grass]] (dependent on density) 0.03 – 0.06 <ref name = SWMM> Oregon State Univ., Corvallis. Dept. of Civil, Construction and Environmental Engineering.; Environmental Protection Agency, Cincinnati ONRMRL. Storm Water Management Model Reference Manual Volume I Hydrology (Revised). 2016:233.https://nepis.epa.gov/Exe/ZyPURL.cgi?Dockey=P100NYRA.txt Accessed August 23, 2017.</ref>
|-
|-
|Surface slope (%)||If the slope > 3%, use [[Check dams]] to create temporary ponding, increase infiltration, and slow flow to reduce erosion.
|Surface slope (%)||If the slope > 3%, use [[Check dams]] to create temporary ponding, increase infiltration, and slow flow to reduce erosion.
|Swale side slopes (run/rise)||[[Enhanced grass swales #Design|Suggested value of 3 or 4 if design permits.]]
|Swale side slopes (run/rise)||[[Enhanced grass swales #Design|Suggested value of 3 or 4 if design permits.]]
|}
|}
[[Category: modeling]]
[[Category: modeling]]